CN102201698B - Control protection device with rapid switching function for power supply system of mine rubber belt conveyor - Google Patents
Control protection device with rapid switching function for power supply system of mine rubber belt conveyor Download PDFInfo
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- CN102201698B CN102201698B CN 201110107135 CN201110107135A CN102201698B CN 102201698 B CN102201698 B CN 102201698B CN 201110107135 CN201110107135 CN 201110107135 CN 201110107135 A CN201110107135 A CN 201110107135A CN 102201698 B CN102201698 B CN 102201698B
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Abstract
The invention relates to a control protection device with a rapid switching function for a power supply system of a mine rubber belt conveyor. In the device, by using hard connecting units in main and standby cavities and rapid cable splicing plugs on the two cavities, rapid switching of the main and standby control units is realized when a failure occurs, the power supply continuity of the rubber belt conveyor is ensured, and the production efficiency of a working surface is increased. The control protection device is mainly used for solving the problems of high failure rate and long maintenance and replacement time existing in the conventional QJZ system combined switch for supplying power to the rubber belt conveyor. When power supply equipment fails, the control units in the main and standby control cavities can be controlled to realize rapid switching with the same set of start and stop buttons only by replacing the hard connection units in the main and standby cavities and rapidcable splicing devices on the two cavities without replacing other control wires, and continuous power supply is ensured.
Description
Technical field
The present invention relates to mine rubber conveyer electric power system control protection field, particularly a kind of mine rubber conveyer electric power system control protective device with quick handoff functionality.
Background technology
Along with the continuous development of the large-scale colliery of modernization transportation system, the mine rubber conveyer is developing to long distance, high belt speed, high-power direction.For disperseing the tension force of adhesive tape, reduce the mechanical strength of adhesive tape, large-scale rubber conveyer all adopts multiple motors to drag, and typical arrangement form is " 2+1 " pattern, and namely head is arranged 2 motor, 1 motor of intermediate arrangement.
For alleviating the impact that direct startup brings to transmission device, prolong the useful life of conveyer key components and parts, reduce starting current to the impact of other electric equipment in the electrical network, solve multiple-motor driving power equilibrium problem, soft start is all adopted with rubber conveyer in the colliery.Soft start type of drive at present commonly used has: and unit switch+motor+adjustable speed fluid coupling+reductor, unit switch+motor+controllable initiating transmitting device (Controlled StartTransmission, CST), unit switch+frequency converter+motor+reductor.Because the drive system complexity, the mine shipping accident accounts for about 28% of total number of accident, and wherein the power failure lost-time acident that causes of unit switch fault frequently takes place.Trace it to its cause is that unit switch in the existing rubber conveyer soft start electric power system has adopted QJZ mine flameproof and intrinsic safety type unit switch series of products, these products are because the quality problems of components and parts own or working service are improper, often break down, after the fault again many because of control loop, back panel wiring is complicated, replacing is inconvenient, troubleshooting time is long, thereby cause entire working surface production normally not carry out, cause very big economic loss.
For addressing the above problem; guarantee that mine continues, efficient, safe operation; press for a kind of reliability height of design, change control protective device convenient, simple to operate and replace the QJZ system in combination switch of powering for rubber conveyer at present; realize switching fast after the fault; guarantee the continuity of rubber conveyer power supply, reduce the lost-time acident that the capital equipment fault causes.
Summary of the invention
The object of the present invention is to provide a kind of mine rubber conveyer electric power system control protective device with quick handoff functionality, it mainly solves the QJZ system in combination switch of powering for rubber conveyer at present and has the failure rate height, the problem that the maintain and replace time is long.When power supply unit breaks down, only need change hard linkage unit in the active and standby cavity and the cable rapid insertion device on two cavitys, need not to change other control lines, can utilize same set of startup, stop button, control the control unit in the standby cavity, realize switching fast, guarantee continuous power supply.
The present invention solves the problems of the technologies described above the technical scheme that adopts:
A kind of mine rubber conveyer electric power system control protective device with quick handoff functionality, it is characterized in that: this device has one main one, and to be equipped with two individual cavity be the rubber conveyer power supply, each cavity links to each other with mains side by 2 cables introducing device of pegging graft fast respectively, 3 quick grafting ejectors link to each other with the stator winding of 3 motor that drive rubber conveyer, the two cavitys outside is respectively designed a secondary cavity and is placed the control line terminal board, only need open this cavity adjustment terminal board wiring during switching and get final product; Active and standby cavity is relative, and working cavity is called main chamber, and another then is reserve chamber; Two individual cavity contain the main control unit of the identical cold standby each other of structure and control the unit fully, and each control unit is subdivided into microprocessor unit again, the unit of adjusting, display unit, sensor unit, electric leakage signal processing unit, current signal processing unit, voltage signal processing unit, intrinsic safety pilot unit, procedure control unit, driver element, hard linkage unit and control line terminal board unit; Described hard linkage unit is the multipole lock pin connector body of 2 in the active and standby cavity and 1 multipole lock pin connector plug; Intrinsic safety precursor circuit control line in one of them socket in each cavity and self control unit, the contactor of driver element are often driven auxiliary contact, the program control signal line links to each other, intrinsic safety precursor circuit control line in another socket and the standby cavity control unit, the contactor of driver element are often driven auxiliary contact, the program control signal line links to each other, and 2 sockets all are fixed on the place cavity; 1 plug links to each other with control line terminal board unit one end, if the work of self cavity, then plug is inserted on the socket that connects self elementary control line; If the reserve chamber body running, then plug is inserted on the socket that connects the stand-by unit control line.When the main cavity control unit breaks down, only need the plug of hard linkage unit in this cavity is inserted on the socket that connects the reserve chamber control line, again 5 quick patchplugs of cable of this cavity are changed on the corresponding position of standby cavity, need not to change the wiring of standby cavity terminal board opposite side.
Described mine rubber conveyer electric power system control protective device with quick handoff functionality, it is characterized in that: in the described control unit, (1) microprocessor unit is the control core, mainly comprises C8051F040 microprocessor, crystal oscillator and reset circuit; (2) adjust the unit for the input load parameter, be made up of 4 buttons, each button links to each other with the input port of microprocessor by monobus; (3) display unit is liquid crystal touch screen, is used for 3 motor status and shows, links to each other with the serial ports of microprocessor by the RS485 bus; (4) sensor unit comprises electric current and voltage transformer, gathers electric current and the line voltage distribution of 3 each phases of motor, delivers to signal processing unit; (5) signal processing unit comprises electric leakage, electric current and voltage signal processing circuit, and the signal of reflection state of insulation and transducer is converted to direct current or the AC signal of 0-3.3V, delivers to the A/D port of microprocessor; (6) the intrinsic safety pilot unit is the circuit that receives startup, stop signal at first, and its intrinsic safety part links to each other with control button far away, and its performance element links to each other with the input port of microprocessor; (7) procedure control unit is used for the sequence starting of 3 motors, and its input links to each other with the delivery outlet of microprocessor, and its output links to each other with hard linkage unit; (8) driver element is often driven auxiliary contact for one group of contactor to link to each other with hard linkage unit for the contactor of control motor start-stop, is provided with auxiliary relay between contactor and the microprocessor.
The present invention is a kind of to have the good effect that the mine rubber conveyer electric power system control protective device of quick handoff functionality has and be: control mode has guaranteed that this device both can independently control the program operation of motor, can also unite the operation of rubber belt conveyor protector control motor flexibly; The protective circuit of reliable in action provides complete protection for motor, reduces the probability that all kinds of perils take place; Especially the quick handoff functionality during fault has guaranteed the continuity of rubber conveyer work, has improved the production efficiency of entire working surface.
Description of drawings
Fig. 1 is apparatus for fast switching structure chart of the present invention.
Fig. 2 is system architecture diagram of the present invention.
Fig. 3 is intrinsic safety precursor circuit figure of the present invention.
Fig. 4 is sequence circuit figure of the present invention.
Fig. 5 is hard linkage unit winding diagram of the present invention.
Fig. 6 is microprocessor unit circuit diagram of the present invention.
Fig. 7 is detection of electrical leakage element circuit figure of the present invention.
Fig. 8 is electric current of the present invention and voltage signal processing unit circuit diagram.
Embodiment
By specific embodiment a kind of mine rubber conveyer electric power system control protective device with quick handoff functionality of the present invention is described in further detail below in conjunction with accompanying drawing; those of ordinary skill in the art is after having read present embodiment; the present invention can be understood and implement, also target of the present invention can be realized simultaneously.
Has the mine rubber conveyer electric power system control protective device structure chart of quick handoff functionality as shown in Figure 1.The design of control protective device has one main one to be equipped with two individual cavity for driving 3 motor power supplies of rubber conveyer; Active and standby cavity is relative, and working cavity is defined as main cavity, and the hypothesis left side is main cavity here, and the right side is standby cavity; 5 cable rapid insertion device S11, S12, S21, S22, L11, L12, L13, L21, L22, L23 are respectively arranged on the active and standby cavity, S11, S12, S21, S22 are used for connecting electric power incoming line, and L11, L12, L13, L21, L22, L23 are used for 3 road load power supplies; The two cavitys outside is respectively designed a secondary cavity and is placed control line terminal board X11, X12, X13, X21, X22, X23, only need open this cavity adjustment terminal board wiring during the change control mode and get final product.
The active and standby cavity of mine rubber conveyer electric power system control protective device contain respectively the structure unanimity cold standby each other main control unit and control the unit fully, the control system structured flowchart is as shown in Figure 2.Each control unit comprises again: microprocessor unit, the unit of adjusting, display unit, sensor unit, electric leakage signal processing unit, current signal processing unit, voltage signal processing unit, intrinsic safety pilot unit, procedure control unit, driver element, hard linkage unit and control line terminal board unit.The feature of this device is can switch fast when 3 motor power supply units break down, and protection is controlled and improved to motor flexibly, guarantees the continuity of rubber conveyer power supply.
The quick handoff functionality of described fault is except above-mentioned dual chamber, cable rapid insertion device, master-slave redundancy control unit; also set up hard linkage unit J11Z, J12Z, J11T, J21Z, J22Z, J22T in the active and standby cavity of control protective device, hard linkage unit is multipole lock pin connector.J11Z, J12Z, J21Z, J22Z are connector body, are fixed in the cavity separately; J11T and J22T are connector plug.Hard linkage unit and control line terminal board unit connection diagram are as shown in Figure 5.11:I1,11:I2,11:I3,11:I4 are intrinsic safety guide control line and the program control lines of the 1st motor of main cavity; 12:I1,12:I2,12:I3,12:I4 are intrinsic safety guide control line and the program control lines of the 2nd motor of main cavity; 13:I1,13:I2,13:I3,13:I4 are intrinsic safety guide control line and the program control lines of the 3rd motor of main cavity; K11, K12, K13 are the contactors in the main cavity Motor Control loop, the 1, the 2nd, and it often drives auxiliary contact.Above-mentioned control line links to each other with the hard linkage unit J11Z of main cavity, links to each other with the hard linkage unit J21Z of standby cavity by wall bushing simultaneously.21:I1,21:I2,21:I3,21:I4 are intrinsic safety guide control line and the program control lines of the 1st motor of standby cavity; 22:I1,22:I2,22:I3,22:I4 are intrinsic safety guide control line and the program control lines of the 2nd motor of standby cavity; 23:I1,23:I2,23:I3,23:I4 are intrinsic safety guide control line and the program control lines of the 3rd motor of standby cavity; K21, K22, K23 are the contactors in the standby cavity Motor Control loop, the 1, the 2nd, and it often drives auxiliary contact.Above-mentioned control line links to each other with the hard linkage unit J22Z of standby cavity, links to each other with the hard linkage unit J12Z of main cavity by wall bushing simultaneously.J11T links to each other with the terminal board unit of this cavity respectively with J22T, by adjusting the wiring of terminal board opposite side, can realize separate unit control and the program control of 3 motor, and the example wiring is program controlled mode.
Described Motor Control and defencive function are realized by microprocessor unit, the unit of adjusting, display unit, sensor unit, electric leakage signal processing unit, current signal processing unit, voltage signal processing unit, intrinsic safety pilot unit, procedure control unit and driver element.(1) microprocessor unit refers to the C8051F040 single-chip minimum system, as shown in Figure 6, works under crystal oscillator Y1, and button S1 realizes reset function.(2) unit of adjusting is designed to 4 buttons, is followed successively by numerical key, moves down key, acknowledgement key, the key of adjusting, and links to each other with the P0.0-P0.3 input port of microprocessor.(3) display unit reaches the DOP-B05S100 liquid crystal touch screen of GG Telecom in being, links to each other with the serial ports of microprocessor by the RS485 bus, shows motor and system mode.(4) the electric leakage signal processing unit as shown in Figure 7,24V exchanges through rectifier bridge U8 rectification, capacitor C 16, C17, C18, C19 filtering become+22VDC after feed regulator isolator U9, R16, the R17 voltage stabilizing.The bleeder circuit of this additional dc power supply by being made of line insulation resistance and regulating resistor R18, R19 delivered to the A/D port of microprocessor behind Lea signal current limiting pressure-limiting R20, the D11 with the reflection insulation status, carries out sampling processing.(5) electric current and voltage signal processing unit are as shown in Figure 8, the signal of each phase current transducer is connected to I+ and I-respectively, be converted to voltage signal through resistance R 21, deliver to the A/D port of microprocessor behind filtering R22, R23, C20, C21, the C22, carry out AC sampling; To voltage signal, earlier the signal of voltage transformer is connected to V+ and the V-of current mode secondary voltage instrument transformer T1, become current signal about 1mA through resistance R 24, R25, adopt then as the identical processing method of current signal it to be become AC signal, deliver to the A/D port of microprocessor and handle differentiation.(6) the intrinsic safety pilot unit as shown in Figure 3, it by detecting signal unit 9V～, D7, F1, C1, R1, R2, U1, R7, R4, signal discriminating unit 18V～, D1, D2, D3, D4, C2, U2, C3, C4, C5, R5, R6 and performance element R8, R9, U3, D6, J1 form.Wherein, U1 is that photoelectrical coupler, U2 are that voltage-stabilizing device, U3 are that voltage comparator, J1 are direct current relay.I1 and I2 are connected to hard linkage unit, cooperate microprocessor, realize remote activation control and protection.(7) procedure control unit as shown in Figure 4, it adopts compound control mode, is made up of buffer circuit U4A, U5A, R10, R11, U6, R12, R13 and driving executive circuit U7A, U7B, U8, D8, D9, J2.Wherein, U4A is that 74LS06, U5A are that 74LS07, U6 are that photoelectrical coupler, U7 are that 74HC14, U8 are that SN75452, J2 are direct current relay.I3 and I4 are connected to hard linkage unit, cooperate microprocessor, realize the order start-stop of motor.(8) driver element is often driven auxiliary contact for one group of contactor to link to each other with hard linkage unit for contactor K11, K12, K13, K21, K22, the K23 of the start-stop of control motor, is provided with auxiliary relay between contactor and the microprocessor.
During mine rubber conveyer electric power system control protective device operate as normal, device links to each other with higher level's feeding switch with S12 by the cable Quick Connect Kit S11 of main cavity, links to each other with 3 motor stator windings by L11, L12, L13; The terminal board of main cavity is connected into program controlled mode (also can be connected into separate unit independence control mode as required) as shown in Figure 5, and standby cavity terminal board can be without wiring; Plug J11T is inserted on the socket J11Z; Press start button, the 1st motor start-up of main cavity, the 2nd motor of time-delay Δ t1 drops into automatically, and the 3rd motor of Δ t2 of delaying time again drops into; Press the 3rd motor of stop button and stop, the 2nd motor of time-delay Δ t3 stops the 1st delayed shutdown after the Δ t4; If the 2nd motor fault stops, the 1st stops immediately, and the 3rd time-delay Δ t5 stops.When main cavity hinders when causing 3 motor to move for some reason, only need the cable quick plug of main cavity is received standby cavity S21, S22, L21, L22, L23 place, plug J11T is inserted on the socket J12Z, press start button, 3 motor of standby cavity control unit control start successively, the realization fault is switched fast, has guaranteed the continuity of sealing-tape machine work, has improved the production efficiency of working face.
In sum, be preferred embodiment of the present invention only, be not to limit practical range of the present invention, i.e. all equivalences of doing according to the content of the present patent application claim change and modify, and all should be technology category of the present invention.
Claims (2)
1. the mine rubber conveyer electric power system with quick handoff functionality is controlled protective device, it is characterized in that: this device has one main one, and to be equipped with two individual cavity be the rubber conveyer power supply, each cavity links to each other with mains side by 2 cables introducing device of pegging graft fast respectively, 3 quick grafting ejectors link to each other with the stator winding of 3 motor that drive rubber conveyer, the two cavitys outside is respectively designed a secondary cavity and is placed the control line terminal board, only need open this cavity adjustment terminal board wiring during switching and get final product; Active and standby cavity is relative, and working cavity is called main chamber, and another then is reserve chamber; Two individual cavity contain the main control unit of the identical cold standby each other of structure and control the unit fully, and each control unit is subdivided into microprocessor unit again, the unit of adjusting, display unit, sensor unit, electric leakage signal processing unit, current signal processing unit, voltage signal processing unit, intrinsic safety pilot unit, procedure control unit, driver element, hard linkage unit and control line terminal board unit; Described hard linkage unit is the multipole lock pin connector body of 2 in the active and standby cavity and 1 multipole lock pin connector plug; Intrinsic safety precursor circuit control line in one of them socket in each cavity and self control unit, the contactor of driver element are often driven auxiliary contact, the program control signal line links to each other, intrinsic safety precursor circuit control line in another socket and the standby cavity control unit, the contactor of driver element are often driven auxiliary contact, the program control signal line links to each other, and 2 sockets all are fixed on the place cavity; 1 plug links to each other with control line terminal board unit one end, if the work of self cavity, then plug is inserted on the socket that connects self elementary control line; If the reserve chamber body running, then plug is inserted on the socket that connects the stand-by unit control line; When the main cavity control unit breaks down, only need the plug of hard linkage unit in this cavity is inserted on the socket that connects the reserve chamber control line, again 2 cables of this cavity are pegged graft fast introducing device and 3 quick grafting ejectors change on the corresponding position of standby cavity, need not to change the wiring of standby cavity terminal board opposite side.
2. the mine rubber conveyer electric power system with quick handoff functionality according to claim 1 is controlled protective device, it is characterized in that: in the described control unit, (1) microprocessor unit is the control core, mainly comprises C8051F040 microprocessor, crystal oscillator and reset circuit; (2) adjust the unit for the input load parameter, be made up of 4 buttons, each button links to each other with the input port of microprocessor by monobus; (3) display unit is liquid crystal touch screen, is used for 3 motor status and shows, links to each other with the serial ports of microprocessor by the RS485 bus; (4) sensor unit comprises electric current and voltage transformer, gathers electric current and the line voltage distribution of 3 each phases of motor, delivers to signal processing unit; (5) signal processing unit comprises electric leakage, electric current and voltage signal processing circuit, and the signal of reflection state of insulation and transducer is converted to direct current or the AC signal of 0-3.3V, delivers to the A/D port of microprocessor; (6) the intrinsic safety pilot unit is the circuit that receives startup, stop signal at first, and its intrinsic safety part links to each other with control button far away, and its performance element links to each other with the input port of microprocessor; (7) procedure control unit is used for the sequence starting of 3 motors, and its input links to each other with the delivery outlet of microprocessor, and its output links to each other with hard linkage unit; (8) driver element is often driven auxiliary contact for one group of contactor to link to each other with hard linkage unit for the contactor of control motor start-stop, is provided with auxiliary relay between contactor and the microprocessor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110107135 CN102201698B (en) | 2011-02-25 | 2011-04-15 | Control protection device with rapid switching function for power supply system of mine rubber belt conveyor |
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| CN201110047084 | 2011-02-25 | ||
| CN201110047084.0 | 2011-02-25 | ||
| CN 201110107135 CN102201698B (en) | 2011-02-25 | 2011-04-15 | Control protection device with rapid switching function for power supply system of mine rubber belt conveyor |
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| CN102201698B true CN102201698B (en) | 2013-09-11 |
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| DE102014208853A1 (en) * | 2014-05-12 | 2015-11-12 | Robert Bosch Gmbh | Method for operating a control device |
| CN113314361B (en) * | 2021-06-11 | 2023-07-25 | 中煤科工集团信息技术有限公司 | Cable rapid alternating power supply replacement device and method suitable for multiple equipment groups |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2836311Y (en) * | 2005-11-14 | 2006-11-08 | 汾西机器厂 | Explosion-proof cell DC power supply screen for mining use |
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| US7612988B2 (en) * | 2007-04-05 | 2009-11-03 | Satin America Corporation | Switchgear with movable user interface module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2836311Y (en) * | 2005-11-14 | 2006-11-08 | 汾西机器厂 | Explosion-proof cell DC power supply screen for mining use |
Non-Patent Citations (2)
| Title |
|---|
| QJZ-315隔爆兼本安型真空磁力起动器的研制;杨晓洁;《河北煤炭》;20031231(第6期);27,28 * |
| 杨晓洁.QJZ-315隔爆兼本安型真空磁力起动器的研制.《河北煤炭》.2003,(第6期),27,28. |
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